Display system, display apparatus, and controlling method thereof

A display apparatus for displaying an image provided by an external image providing apparatus, the display apparatus comprising:

• a communicator;
• a display;
• and
• a processor configured to:
• control the communicator to transmit, to a remote control device, a first control command which controls the remote control device to transmit a first control signal included in a first control code set to the external image providing apparatus,
• based on the image provided by the external image providing apparatus being changed in response to sensing of the first control signal, acquire apparatus information, which identifies the external image providing apparatus, based on the changed image and the first control signal, and
• based on the image not being changed in response to sensing of the first control signal, transmit, to the remote control device, a second control command which controls the remote control device to transmit a second control signal included in a second control code set to the external image providing apparatus,
• wherein at least one of a manufacturer or a model corresponding to the second control code set is different from at least one of a manufacturer or a model corresponding to the first control code set.

A method of controlling a display apparatus, the method comprising:

• transmitting, to a remote control device, a first control command, which controls the remote control device to transmit a first control signal included in a first control code set to an external image providing apparatus;
• based on an image provided by the external image providing apparatus being changed in response to sensing of the first control signal, acquiring apparatus information, which identifies the external image providing apparatus, based on the changed image and the first control signal;
• and
• based on the image not being changed in response to sensing of the first control signal, transmitting, to the remote control device, a second control command which controls the remote control device to transmit a second control signal included in a second control code set to the external image providing apparatus, wherein at least one of a manufacturer or a model corresponding to the second control code set is different from at least one of a manufacturer or a model corresponding to the first control code set.